BG 7.28: Persons who have acted piously in previous lives and in this life and whose sinful actions are completely eradicated are freed from the dualities of delusion, and they engage themselves in My service with determination.
and when one is perfectly performing such service they are qualified for liberation
Possible, if anyone's DNA can be without mutation. Otherwise, all bondings in body are to be freed.
BG 18.54: One who is thus transcendentally situated at once realizes the Supreme Brahman and becomes fully joyful. He never laments or desires to have anything. He is equally disposed toward every living entity. In that state he attains pure devotional service unto Me.
God is said to not bonded, omini-present......., someone alike god should posess such qualities of god.
BG 18.55: One can understand Me as I am, as the Supreme Personality of Godhead, only by devotional service. And when one is in full consciousness of Me by such devotion, he can enter into the kingdom of God.
BG 18.56: Though engaged in all kinds of activities, My pure devotee, under My protection, reaches the eternal and imperishable abode by My grace.
Getting Divya dristhi, becoming alike god or emerging into god/prime force can mean, capable of seing indescribable one.
in regards to samadhi there is Arjuna's q
BG 2.54: Arjuna said: O Kṛṣṇa, what are the symptoms of one whose consciousness is thus merged in transcendence (samādhi-sthasya — of one situated in trance)? How does he speak, and what is his language? How does he sit, and how does he walk?
krsna gives many indications in the verses that follow - and none of them have to do with killing yourself by starvation.
(although there are indications for regulated eating)
BG 6.16: There is no possibility of one's becoming a yogī, O Arjuna, if one eats too much or eats too little, sleeps too much or does not sleep enough.
BG 6.17: He who is regulated in his habits of eating, sleeping, recreation and work can mitigate all material pains by practicing the yoga system.
As such, Fasting and other practices can be meant to cure the extreme sicknesses if curable. If cured, start refreshed, not sucide which can be extreme sin...i.e. intentionally killing your own cells which may be alike your first children. Still, fruits, seeds etc., as they seprate from mother plant, when fully/optimally riped is indicative in "mahamritunjay mantra".
http://kamalkapoor.com/vedicmantras/mahamritunjayaMantra.asp